Elections were held on 19 March 1977 to elect members to the fifth Niyamasabha. The United Front, led by INC and CPI won plurality of seats and remained in power, with K. Karunakaran as the Chief Minister.

The Kerala Legislative Assembly, popularly known as the Kerala Niyamasabha, is the State Assembly of Kerala, one of the 28 states in India. The Assembly is formed by 140 elected representatives. Each elected member represents one of the 140 constituencies within the borders of Kerala and is referred to as Member of the Legislative Assembly (MLA). The present Kerala Legislative Assembly consists of 140 elected members. The election for the Kerala Legislative Assembly is conducted by the Election Commission of India (ECI).